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One of Varic Company’s products goes through a glazing process. The company has observed glazing costs as follows over the last six weeks:

Week Units Produced Total Glazing Cost

1 8 270

2 5 200

3 10 310

4 4 190

5 6 240

6 9 290

For planning purposes, the company’s management wants to know the amount of variable glazing cost per unit and the total fixed glazing cost per week.

**Required:**

1. Using the High - low method, estimate the variable and fixed elements of the glazing cost.

2. Express the cost data in (1) above in the form Y = a + bX.

3. If the company processes seven units next week, what would be the expected total glazing cost?